KR100937482B1 - Method and device for sewage disposal using the submersible hollow media - Google Patents

Abstract

PURPOSE: A sewage disposal device using a hollow complex carrier and a method thereof are provided to prevent degradation of dentrificaion and dephosphorization efficiency due to dissolved oxygen, and to retreat remaining nitrogen and phosphorous in sewage. CONSTITUTION: A sewage disposal device(100) using a hollow complex carrier includes the following: a screen tank(110) eliminating adulteration included in sewage; an anaerobic tank separating phosphorus in sewage supplied from the screen tank and a denitrification tank; an anoxic chamber denitrating the nitrogen in the sewage which is transferred from a sewage and a contact oxidation tank(140); the contact oxidation tank removing the remaining nitrogen and the phosphorous; a settling tank(150) discharging the sludge; and a denitrification tank removing the nitrogen included in the sludge. The contact oxidation tank includes a diffuser and the hollow complex carrier.

Description

Sewage treatment system and method using hollow composite carriers {Method and device for sewage disposal using the submersible hollow media}

The present invention relates to a sewage treatment to remove nitrogen and phosphorus from sewage or organic wastewater, and more specifically, to denitrification and denitrification due to dissolved oxygen by floating an air contact blocking member to block the inflow of oxygen to the denitrification tank, anaerobic tank and anoxic tank. Sewage using hollow composite carrier to remove organic matter and residual nitrogen and phosphorus simultaneously by using hollow composite carrier that provides a large specific surface area to inhabit a large amount of microorganisms in aerobic tank. An altitude processing apparatus and method.

Recently, due to the increase in population and the development of industry, the types and generation of pollutants such as household wastewater, industrial wastewater, and livestock wastewater are increasing, and the water quality of the streams is not only various organic pollutants but also nitrogen, phosphorus, etc. It is acting as a decisive factor that causes serious pollution by eutrophication.

The nutrients of nitrogen and phosphorus are essential nutrients to living organisms, but if they are excessively discharged without processing them, they cause water pollution due to eutrophication, causing severe odors and adversely affecting the self-cleaning of rivers. There was a problem of destroying the ecosystem.

In order to solve the above problems, in recent years, a biological removal method for removing nutrients by microorganisms has been used, and nitrogen contained in the inflow water is reduced by denitrifying microorganisms while being converted into nitrate nitrogen by aerobic nitrification microorganisms, and is then atmosphere. In addition to being released into the medium, the excess intake of phosphorus to remove the microorganism with increased phosphorus content in the sludge is removed.

However, the biological removal method, if the fluctuations in the concentration or flow rate of the influent is severe, nitrogen and phosphorus can not be treated stably, in order to solve this, the installation cost increases due to the expansion of the treatment facilities, not only economic efficiency is lowered, but also microorganisms There is a problem that is difficult to maintain because a certain amount of microorganisms are not maintained as the loss of frequent.

In addition, the water quality worsened due to the large amount of nitrogen and phosphorus, the treatment efficiency is reduced due to the long recovery period due to the microorganisms that do not proliferate quickly, and the cumbersome problem of securing a high concentration of microorganisms to increase the treatment efficiency there was.

The present invention has been made in view of the above-mentioned conventional defects, and its object is to dephosphate due to dissolved oxygen by floating an air contact blocking member which blocks the contact and inflow of air (oxygen) to the denitrification tank, the anaerobic tank and the anoxic tank. And it provides an apparatus and method for treating sewage altitude using a hollow composite carrier to prevent the removal efficiency of denitrification.

In addition, another object of the present invention is that the microorganisms, which are distributed in some anaerobic zones while conveying and circulating sewage, are fixed in the hollow composite carriers of the contact oxidation tank deposited and oxidize organic matters, and the hollow composite carriers have a large specific surface area. The present invention provides an apparatus and a method for treating sewage altitude using a hollow composite carrier to reprocess residual nitrogen and phosphorus in sewage tanks that have passed through a denitrification tank, an anaerobic tank, and an anaerobic tank due to a large number of microorganisms.

The sewage altitude treatment apparatus using the hollow composite carrier of the present invention,

As a sewage altitude treatment device for treating nitrogen and phosphorus in sewage,

A screen tank for removing the impurities contained in the sewage;

An anaerobic tank for releasing phosphorus from sewage supplied from the screen tank and the denitrification tank;

An oxygen-free tank for denitrifying nitrogen of the sewage returned from the sewage and the contact oxidation tank passing through the anaerobic tank;

A contact oxidation tank for denitrifying and dephosphorizing residual nitrogen and phosphorus in the sewage by the microorganisms inhabiting the hollow composite carrier having a large specific surface area while oxidizing organic matter by supplying air to the sewage which has passed through the anoxic tank;

A sludge settled through the contact oxidation tank and a settling tank for discharging the supernatant separated from the sludge by sedimentation;

It is characterized in that it comprises a denitrification tank for denitrifying nitrogen contained in the sludge circulated while being returned from the settling tank.

The sewage altitude treatment method using the hollow composite support of the present invention,

A screen step of removing impurities contained in the sewage;

An anaerobic step of allowing the microorganisms to be desorbed by the phosphorus contained in the sewage supplied from the screen step and the denitrification step;

An oxygen free contact step of firstly denitrifying nitrogen of the sewage returned from the sewage and contact oxidation tank passing through the anaerobic step;

A catalytic oxidation step in which nitrogen is converted into nitrogen gas by secondary microorganisms inhabiting the air and the hollow composite carrier supplied to the sewage supplied through the anoxic contacting step and denitrified secondly;

A precipitation step of separating and discharging the sludge precipitated through the catalytic oxidation step and the supernatant water from which the sludge is precipitated and separated;

It is characterized in that circulating the denitrification step of denitrifying nitrogen contained in the sludge which is precipitated in the precipitation step and selectively returned.

According to the present invention, an apparatus and method for treating sewage altitude using a hollow composite carrier may float air contact blocking members in a denitrification tank, an anaerobic tank, and an oxygen-free tank to block the inflow of oxygen into each tank so that removal efficiency of dephosphorization and denitrification due to dissolved oxygen is not reduced. The user can have the advantage of improving the reliability.

In addition, according to the present invention and the sewage altitude treatment apparatus and method using the hollow composite carrier, the sewage of each tank is circulated to prevent the loss of microorganisms, and the specific surface area is large, the hollow composite of the contact oxidation tank deposited in some anaerobic zone Microorganisms that inhabit or grow in large quantities and oxidize organic matter can oxidize organic matter and reprocess the residual nitrogen and phosphorus in sewage tanks, anaerobic tanks, and anoxic tanks to improve the efficiency of denitrification and dephosphorization. By removing both nutrients and nutrients at the same time can have the advantage of reducing the work time.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a schematic configuration diagram of the present invention, Figure 2 is a perspective view of the hollow composite carrier of the present invention, Figure 3 is a cross-sectional view of FIG.

The sewage altitude treatment apparatus using the hollow composite carrier of the present invention is a sewage altitude treatment apparatus 100 for treating nitrogen and phosphorus in sewage, and includes a screen tank 110 for removing contaminants contained in the sewage, and the screen An anaerobic tank 120 for desorbing the phosphorus of sewage supplied from the tank 110 and the denitrification tank 160 is configured, and the nitrogen of the sewage returned from the sewage and the contact oxidation tank 140 passing through the anaerobic tank 120 is Oxygen-free tank 130 for denitrification is provided, and by supplying air to the sewage that passed through the anoxic tank 130 to oxidize the organic matter and inhabiting the hollow composite carrier 142 having a large specific surface area and the residual nitrogen of the sewage and A contact oxidation tank 140 for denitrifying and dephosphorizing phosphorus is configured, and a sludge settled through the contact oxidation tank 140 and a settling tank 150 for discharging the supernatant from which the sludge is precipitated and separated are configured. , The spit To be configured to include a denitrification tank 160 for denitrification of nitrogen contained in the sludge in the tank for rotation as the conveying unit 150, it will be described in more detail.

Floating the air contact blocking member 170 of various sizes to effectively block the contact of sewage and air (oxygen) in the denitrification tank 160, anaerobic tank 120 and the oxygen-free tank 130, the air contact blocking member ( The large ball 171 and the small ball 172 is preferably formed of a synthetic resin, that is, styrofoam having a low specific gravity while maintaining a ratio of 1: 1/5.

In addition, the sewage of the denitrification tank 160, anaerobic tank 120 and the anoxic tank 130 is preferably mixed by an underwater stirrer.

The contact oxidation tank 140 is provided with an air diffuser 141 for supplying air to the sewage that has passed through the anoxic tank 130, so that the microorganisms inhabit by the air supplied from the air diffuser 141. It is provided including a hollow composite support 142 having a wide surface area.

The hollow composite carrier 142, the first and second plates 142a and 142b are stepwise connected to each other so that the space 142c is penetrated while the specific surface area is widened, so that the hollow composite carrier 142 is continuous. Preferably, the space 142c penetrates radially through the first and second plates 142a and 142b.

The hollow composite carrier 142 is preferably formed of a polygonal plate so as to be able to stack a cylinder through which the inside penetrates.

The following describes in detail an embodiment of the present invention configured as described above.

First, when the sewage containing various organic matter and flotation material is introduced into the screen tank 110 from the source, after separating the contaminants contained in the sewage from the screen tank 110, the sewage of a constant flow rate into the anaerobic tank 120 Supplied.

Phosphorus contained in the sewage supplied to the anaerobic tank 120, the microorganisms inside the anaerobic tank 120 is absorbed and precipitated, which is repeated by the process of floating by the water agitator in the anaerobic tank 120 so that phosphorus is dephosphorized After that, it is supplied to the anaerobic tank 130.

Nitrogen contained in the sewage supplied to the anoxic tank 130 is denitrified by converting it into a nitrogen compound in an aerobic state, which is denitrated, which is repeated after the floating process by the water agitator in the anoxic tank 130, the contact oxidation tank Supplied to 140.

In addition, the sewage supplied to the contact oxidation tank 140 is mixed with air bubbles ejected from the diffuser 141, the oxygen of the air bubbles are mixed in the sewage, the amount of dissolved oxygen in the sewage is increased, the sewage water quality and pollutants It is possible to homogenize the concentration and the like.

By the air bubbles supplied from the diffuser 141, the sewage is circulated from the lower part to the upper part and the upper part to the lower part, and the oxygen mixed in the circulating sewage is supplied to the hollow box carrier 142 and hollowed out. Oxygen is supplied to the microorganisms inhabiting the composite carrier 142.

In this case, the hollow composite carrier 142, the first and second plates 142a and 142b are stepwise connected to each other so that the space 142c penetrates while the specific surface area is widened. The first and second plates 142a and 142b are connected to each other, and the space 142c penetrates radially.

Here, the hollow composite carrier 142, the first and second plates 142a and 142b are continuously formed in the vertical, horizontal, vertical and horizontal directions so that the space 142c penetrates radially. As shown in FIG. 4, it may be formed in a cylindrical shape. The continuous first and second plates 142a and 142b may be cut to a predetermined size of a polygon to form a polygonal plate.

Nitrogen contained in the sewage that circulates from the bottom to the top and again from the top to the bottom by the air bubbles ejected from the diffuser 141 is converted to nitrogen gas by the biological reaction of the microorganisms, and some of them are denitrated. While being returned to 130 and at the same time repeating the denitrification process, the other part is supplied to the settling tank 150 to be precipitated, the sludge precipitated in the settling tank 150 is separated from the supernatant, the separated supernatant is disinfected to sewage pipe Will be discharged through.

In addition, a part of the sludge precipitated in the settling tank 150 is conveyed to the denitrification tank 160 by the conveying pump 161, repeats the process of floating by the underwater agitator of the denitrification tank 160, another Some may be drawn at regular intervals to reduce the load on the settling tank 150.

Here, the air contact blocking member 170 is floated in the denitrification tank 160 and the anaerobic tank 120 and the oxygen-free tank 130 to block the contact of the sewage and air (oxygen) of each tank, which is caused by dephosphorization and This is to prevent the removal efficiency of denitrification from dropping.

The air contact blocking member 170 is formed of a synthetic resin that can float in various sizes, which is a large ball 171 having a diameter of about 100 mm and a small ball having a diameter of about 1/5 of the diameter of the large ball 171. The large ball 171 and the small ball 172 is preferably formed of styrofoam having a low specific gravity and excellent floating force.

In addition, each jaw input amount of the large ball 171 and the small ball 172 of the air contact blocking member 170 is an amount that can sufficiently cover each jaw, the ratio of the input is a large ball 171 and a small ball 172. This 1: 2, that is, the small ball 172 is added twice more than the large ball 171, which is shown in Figure 5a to 5b, so that the large ball 171 and the small ball 172 are arranged in sequence By doing so, it is possible to most effectively block the contact between the sewage and the air of each tank.

In this case, when the large ball 171 is not inserted into the small ball 172, it is preferable to float.

By repeating the above process, it is possible to denitrate and dephosphorize sewage nitrogen and phosphorus by the optimum reaction for the microbial characteristics of each tank, and to be able to remove organic matter and residual nitrogen and phosphorus nutrients at the same time.

As described above, the present invention, although described by the limited embodiments and drawings, terms or words used in the present specification and claims are not limited to the ordinary or dictionary meanings and should not be interpreted, the technical spirit of the present invention It must be interpreted to mean meanings and concepts. Therefore, the configuration shown in the embodiments and drawings described herein are only one embodiment of the present invention, and do not represent all of the technical spirit of the present invention, various changes within the scope of the claims of the present invention It should be understood that there may be equivalents and variations.

1 is a schematic configuration diagram of the present invention

2 is a perspective view of the present invention hollow composite carrier

3 is a cross-sectional view of FIG.

Figure 4 is a perspective view of the use state of FIG.

5 is a state diagram in which the air contact blocking member is inserted into the denitrification tank and the anaerobic tank and the anoxic tank according to the present invention;

a is the front view,

b is a plan view.

<Explanation of symbols for the main parts of the drawings>

100: sewage treatment apparatus 110: screen tank

120: anaerobic tank 130: anaerobic tank

140: connection oxidation tank 141: diffuser

142: hollow composite carrier 150: sedimentation tank

160: denitrification tank 170: air contact blocking member

Claims (11)

As a sewage altitude treatment device for treating nitrogen and phosphorus in sewage, A screen tank for removing the impurities contained in the sewage; An anaerobic tank for releasing phosphorus from sewage supplied from the screen tank and the denitrification tank; An anoxic tank for denitrifying nitrogen of the sewage returned from the sewage and the contact oxidation tank passing through the anaerobic tank; A contact oxidation tank for denitrifying and dephosphorizing residual nitrogen and phosphorus in the sewage by the microorganisms inhabiting the hollow composite carrier having a large specific surface area while oxidizing organic matter by supplying air to the sewage which has passed through the anoxic tank; A sludge settled through the contact oxidation tank and a settling tank for discharging the supernatant separated from the sludge by sedimentation; Containing a denitrification tank for denitrifying nitrogen contained in the sludge circulated while being returned from the settling tank, The contact oxidation tank, An acid pipe for supplying air to the sewage that has passed through the anoxic tank; Hollow composite formed by connecting the first and second plates in a stepwise manner so that the specific surface area is wide so that microorganisms inhabit by the air supplied from the diffuser, and the first and second plates are stepped side by side so as to penetrate radially. Sewage treatment apparatus using a hollow composite carrier characterized in that it comprises a carrier. The method according to claim 1, Sewerage altitude treatment apparatus using a hollow composite carrier, characterized in that to float the air contact blocking member of various sizes to effectively block the contact of the sewage and air in the denitrification tank, anaerobic tank and anaerobic tank. The method according to claim 2, The air contact blocking member is a sewage altitude treatment apparatus using a hollow composite carrier, characterized in that the large ball and the small ball is formed of a synthetic resin having a low specific gravity while maintaining a ratio of 1: 1/5. The method according to claim 1, The sewage treatment system using a hollow composite carrier, characterized in that the denitrification tank, anaerobic tank and anaerobic tank sewage is mixed by an underwater stirrer. delete delete delete The method according to any one of claims 1 to 4, The hollow composite support is a sewage altitude treatment apparatus using a hollow composite carrier, characterized in that formed in a cylinder through which the inside. The method according to any one of claims 1 to 4, The hollow composite support is a sewage altitude treatment apparatus using a hollow composite carrier, characterized in that formed in a polygonal plate to be stacked. delete delete

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